Original Site:
http://bear.cwru.edu/eecs_316/eecs_317_20010209.ppt

File: 
eecs_317_adder.pdf 

Link:
[http://osorio.wait4.org/SSC0113/AULA02/eecs_317_adder.pdf]

EECS 317 Computer Design:
Lecture 4: The VHDL N-bit adder
Francis G. Wolff 
Case Western Reserve University